Cylinder-grinding attachment for lathes



W A. JENNINGS.

Mmmm Mmm-:MEM FOR LMHES.

AIVLNAHON HLM) HAY 31.

Patented Aug. 35, i922.

Z SHEUSASHEET l.

s S .6 /f ff,

'WELLIAT/I A.

JENN'IN'G-S.

OF RAYTWN. MLSSOURI.

CYLNDEB-GRINDING ATTACHBIENT IEDE, LATI-IES.

Application tiled May 31,

ile it known that l. 1`\v11.1.1 \1 .lnN- Nrxus. a citizen of the lvnited States. and resident ot' laytown. eount \v of Jackson. .citate of Missouri. hare invented a eert-ain new and useful improvement in ("vlinder- Grinding .ittarhlnents `for Lathes` otr which the following is a complete specilieation.

rl`his invention relates to cylinder grinding appliances. and has tor its ohject to produce an attachment which ran he rea lili secured to a lathe ot' air.' approved trpe after removing the head-stoek thereof. and hr which a cylinder or other oluert can he etiieientl)v and aecuratel)v ground.

A Jfurther ohjeet to produce an attachment aeeuratel)v adjustahle to operate on erlinders or the lik oi' widel)v dill'erentdia111eters,

More speriiiwally the ohlieit is to produie au attachment haring a grinding wheel adapted to he revolved around its own anis at a high rate of speed and to hothl;v deseriheia circle at a relatively low lspeed. and enihodying 111ea11s for manual adjustn1ent to var r the diameter ot the circle deserihed h the wheel without affecting its speed ol' rotation around its own axis.

,Yith these o'oierts in riew the 1n\ent1on ronsists in certain novel and useful features ot' construction and eoinhinations of parts as lnereinai'ter deserihed and claimed: and in order that it 11111)' he fully understood reference is to he had to the aia-on1panyina' drawings. in which:

Figure l represents a :side elerationo a partot' a lathe equipped with a grind111g attachment enihodving the invention. een tain parts heing hroken away to disclose parts otherwise hidden. a

Figure 2 is an enlarged central longdudinal ,section olI parts o1" the apparatus' shown in Figure 1.

Figure il is an enlarged end view of the attarhnient. and shows in ronjunction therewith a erlinder heing ground.

Figure i is a central longitudinal section taken on the line lY-lV ot' Figure Il.

Figure is a vrees section taken on the line Y-V ot Figure l.

Figure t3 is a section taken on the line Yl-Tl ot' l`igure l.

Figure T is an enlarged section taken on the line Til-Vil of Figure 5.

Referring now to the drawings in detail. l indicates a part ot' a lathe ot any suitable Specication of Letters atent.

patented ring. 5, MEZE.

1921. Serial N0. 474,035.

or preferred type and 2 and 2l represent hearings at the head end ot' the lathe. l represents the mandrel Aiournaled in the bearingsl and .'1 the rustoniary cone pullej7 mounted on the mandrel and adapted to he operated through the niediuni of a belt7 (not Shown). in the rustoinary manner.

ln lieu of the usual head-Stork of the lathe. a threaded disc i3 niounted on the end ot' the niandreland bolted at 'T t0 said dise. is a large plate S having a hub portion il. the hore ot which communicates with the hore ol' the mandrel l. Integral with the plate t* a hoss il) having an arcuate inner i'aee extending concentrieally w itl1 the axis of plate S on the mandrel. as shown clearly hy Figure 3.and said plate is t'orined with a circular face ll struck from the saine renter as the arcuate i'aee oli the hoss and inclined slightly with respect to the axis oi'the mandrel. as `shown clearijv hy Figure 4. retaining ring l2 lits against said inrlined tace and the arcuate tace ol' the hos?, il). and is bolted lirudv 11s at l to the plate ti. said retaining ring heing reressed at 1l at its rear side for the aeeonunodation of a large worm wheel 15 journaled in the retaining ring and titting around 'the huh il of plate S it heing evident that as said wheel is iitted against the inelined 'face ot the plate. the axes ol the wheel and plate intersect.

The worin wheel lz' is intergeared with a worin 1G suitahhY liournaled in the boss lll. which hoss and the adjacent portions of the plate H and retaining fring 12 are recessed a' at i131i (see Figure 5) t'or the arrinnniodation oiI said worn1 itl. The worin lo is equipped with a knol 1T at its outer end. and said knol) is provided with a circular dial 1H. any division niark of which is adapted to register with a niark la on the hoss. the arrangement heing such that the operator h r noting the relation hetween the dial marking and the niark lll. can adjust the worni wheel to the desired extent. for a purpose which hereinafter appears.

'l`he retaining ring l2 is provided with a radial marking JU Vfor registration with dial markings )lla on the exposed face of the worin wheel. as shown clearlyv hy Figure *51. and said worin wheel within the Said dial marking 2U is reeessed as at 21 (foneentrirallv oic the axis of `the mandrel. .i tubular arni 2;! is provided with a ercular base flange or enlargei'i'lent 22 having an inelined tace litting snugly in the recess' 21 having its bottom in a plane at an angle to the corresponding plane of the wheel and is bolted rigidly in place aa at 22% to the worm wheel. and secured within said arm at the outer and inner ends thereolZ respectively. are bearing bushings .241 and 25. and between said bushings the arm is provided with a plug closed oiling opening 225.

A shaft [i extends axially through said arm. but it will be apparent from the above that the axis of the As'liatt at an angle to that ot the wheel l5. on account of the tact that the tube and shaft axially coincide. while the former as it tits in an inclined re cess in the face ot' the wheel must therefore. have its axis at an angle to the axis ol" such wheel. The Shaft 12T `iournaled in said bushings QP) and 25. and. where it engages the outer one. ia preferably1 ol tapered torni as shown aty 2T, The outer end ot' said lshaft is threaded and is equipped with a cap 2H fitting around the outer end ot' the tubular arm Q2. lt is also provided with a clamping nut 2f) lor clamping a grinding wheel 3l) on the shalt against cap .in internally threaded sleeve Si is screwed npon the inner end ot the sha t't 2i'. and screwed into lsaid sleeve and abutting the inner end ot said shat't is a plug Iii equipped with a rectangular' bote or passage t'or the reception ot' the angular outer end of a refs'iiient or flexible shaft 2573 extending through the mandrel -t and rigidliY secured to a chuck 3l of any suitable type to which rotation naar be imparted. .is shown. the chuck :it is adapted to be driven hv a belt at a very high rate ot speed. the transmis sion ol' power being through said resilient shaft and shat't '.Tito the grinding wheel lil). The ehuclt is mounted in a 'tapering sleeve il?) adapted to he secured within the mandrel in a common and well ltnown inanner. the arrangenn-nt being auch that the shaft 33 shall be t'ree to how or bend slightly without interfering with its rotation. in order to acconnnodate dillerent adjustments ol' the tubular arm '22 l'or the pur pose ol' grinding cylinders o't' diilerent di ameters.

liv relerence to Figure l. it will be seen that the arm 2:2 is shown in full linea in one position and in dotted lines in a dit'- t'erent position. this change ot position heing due to adjustment ett'eeted b v the operation ot the worin and the rotation imparted therebi,Y to the worm wheel upon the pitched or inclined face ll of plate H.

In operation the power transmitted to the mandrel el'l'ects rotation ot' plate n' around its own axis` this resulting in cansing turning moveinent at the same speed to the worin wheel. but as said wheel is ifiawaa disposed ont oi perpendicular with respect to the axis ol' said plate. the grinding wheel is caused to travel bodily in a circle. At the aaine time the rapid rotation imparted to the flexible shaft 33. imparts a corresponding rotation to the grinding wheel around itaI own axis. the said sha t't weaving vor bending to accommodate the angular relation thereto ot the shalt '227. liv the arrangement described it will be apparent that an etlieient grinding action is obtained and that through the adjustment ot' the worm wheel explained. the circle described h v the grinding wheel can be made larger or smaller within the limit of the device. the pitch ol the tace t1 ol plate e' determining the angular relation ot' the axis ot' shaft 2T with respect to the axis ol s'hat't 33.

From the above description it will be apparent that l have ln'odnced a grinding attachment t'or lathes which embodies the features ol advantage set torth as desirable in the statenen't ot the object oll the in vention. and it is to he understood that while I have illustrated the preferred embodiment olI the invention. it is susceptible of modification in various particulars without departing 'trom the principle ol con struction and mode ol` operation involved.

wWhat l claim is:

l. The combination ot` a rotatable plate. a wheel rotatable with :said plate and liaving ita axis permanently tixed at an angle. to the axis ol' `said plate. a shaft movable with and bearing a `iournaled relation to said wheel and disposed with its` axis at an angle to the axis ot' the wheel. a grinding wheel on said shaft. and a ilexible'shalit. coupled to revolve said tirstaiaimal shat't around its own axis.

.Z. rl`he combination ot' a rotatable plate. a wheel carried b v said plate and having its axis permanentlwv lixed at an angle to the axis ol the plate. an arm projecting from said wheel and having its axibl at an angle to the axis thereol'. a shat't iournaled in said arm and a\iall \Y alined therewith. a grinding wheel on the outer end o'll said sha l't. and a flexible sha t't extending through said plate and coupled to the inner end of the first-named Shaft.

5%. The combination of a rotatable plate. a worm wheel rotatable with and journaled on Asaid plate and bearing a pitched re lation thereto. a worm shat't tor rotatablv adjunting the said wheel in ita` pitched relation to the tace of said plate. a shaft nu vable with and having its axis at an angle to the axis' ol said wheel and inde. pendently rotatable around itS own axis. and a grinding wheel secured on said shaft.

4. The combination of a rotatable plate. a worin wheel rotatable with and journaled on said plate and bearing a pitched relation thereto. a worm Shat't t'or rotatably adjustinxgr the said wheel in its pitrhed relation to the tare of said plate. a shalt movable with aud ha\'in;`r its axis at an an jle to the axis ot said wheel and independentl)v rotatable around ita own axis. and a tlexible shaft eoupled to the first nalned sha't't.

D, The minbination of a rotatable Inandrel. a plate thereon haring an inclined t'at-e. a rotatabl \'adjustalle wheel journaled on the plate and titted against the inclined faee thereof. a tlexible shat`t extending' through the mandrel and said plate and wheel. a tubular arm carried by and diS- posed with its axis at an angle to the axis ot' said wheel. a shat't journaled in the said arm and eoupled to tht` tirst-nanied shaft. and a grinding wheel seeured on the shat't journaled in the arm.

tl. rl`he ronibination of a rotatable plate. a wheel rotatable with said plate and harin;r it axis pernianentl)V tixed at an angle to the axis otl said plate. a sbat't movable with and bearing' a journaled relation to said wheel and disposed with its axis at an angle to the axis otsaid wheel. and means t'or revolving said shalt around its own axis.

T. The combination of a rotatable plate. a wheel Carried b r said plate and hating its axis permanentlr lixed at an angle to the axis of the plate` an arm projectingfrom said wheel and haring its axis at an angle to the axis of said wheel. a shaft jourualed in `said arm and axially alined therewith.

aud a flexible sha l't extendiu;r through said plate and eoupled to the inner end otI said tirst-nanied shaft.

ta'. rl`he combination ot' a rotatable plate` a worin wheel rotatable with and journaled ou said plate and haringr a pitched relation thereto.a worm shat't tor rotatabl)Y adjusting the said wheel on said plate. a 'shatt inovable with and bearingr a journaled relation to said wheel and having.r its axis at an angle to the axis thereof. and means for rotating` said shat't around its own axis.

9, The combination with a rotatable plate havingan inrlined tare. a rotatabtV-adjastahle wheel jourualed on said plate and fitted against the inelined t'aee thereof. a shaftjournaled in said wheel and havin;r its` axia` at au angle to the axis thereof. means tor rotatabl)V adjustingr said wheel with resj'ieet to said plate. means` for rotatingt said plate. and nieans tor rotatingl said shaft.

lll4 The eomhination with a rotatable plate ha\'in; an inelined tare. a rotatabl v adjustable wheel journaled on said plate and fitted against the inc-lined taee thereot'. a shat't journaltal in said wheel and havinzgr its axis at an angle to the axis thereof. a worin for rot'atabljv adjusting said wheel with respeet to said plate. means vt'or rotatiutr said plate. and means for rotating Said shaft.

ln witness whereof t hereunto atiix my signature.

lVlLLlM A. JENINGS. 

